Public domain
New York, New York. Class in the use of precision instruments, part of the government-sponsored industrial training program at New York University. Most of the students are women. Testing diameter variations and concentricity of ground stepped shafts with a comparator. The readings are in 10,000ths
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineNew York, New York. Class in the use of precision instruments, part of the government-sponsored industrial training program at New York University. Most of the students are women. Testing diameter var. 1943-01-01. Collins, Marjory. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.